Fault code 49=

The Motor Controller module has measured a voltage from the valve diagnostic
circuit that indicates the cold valve is faulty. The most likely cause is that the valve
harness has not been connected correctly or the valve is open circuit. See fault 48
for service procedure.

Code 48=

The Motor Controller module has measured voltages from the valve diagnostic
circuit that indicate both the hot and cold valves are faulty. The most likely cause is
that the valve harnesses have not been connected correctly or the valve is open
circuit.
Primary Source: Wiring.
Action:
Check the valve harnesses are correctly fastened to the valves or the pins are not
bent backwards.
Secondary Source: Water Valves.
Action:
Check the valve coils are not faulty (open circuit).

Tertiary Source: Motor Controller module.
Action:
Replace the Motor Controller module.